| 1 | /*
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| 2 | * midi usb driver
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| 3 | * usb_midi.h
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| 4 | *
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| 5 | * Copyright 2006-2011 Haiku Inc. All rights reserved.
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| 6 | * Distributed under the terms of the MIT Licence.
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| 7 | *
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| 8 | * Authors:
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| 9 | * Jérôme Duval
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| 10 | * Pete Goodeve, pete.goodeve@computer.org
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| 11 | *
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| 12 | * Some portions of this code were originally derived from
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| 13 | * USB Joystick driver for BeOS R5
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| 14 | * Copyright 2000 (C) ITO, Takayuki
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| 15 | * All rights reserved
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| 16 | *
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| 17 | */
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| 18 |
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| 19 |
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| 20 | #include <Drivers.h>
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| 21 | #include <USB.h>
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| 22 | #include <usb/USB_midi.h>
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| 23 |
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| 24 | #include "ring_buffer.h"
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| 25 |
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| 26 | /* Three levels of printout for convenience: */
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| 27 | /* #define DEBUG 1 -- more convenient to define in the code file when needed */
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| 28 | #define DEBUG_INFO 1
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| 29 | #define DEBUG_ERR 1
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| 30 |
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| 31 | /* Normally leave this enabled to leave a record in syslog */
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| 32 | #if DEBUG_ERR
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| 33 | #define DPRINTF_ERR(x) dprintf x
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| 34 | #else
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| 35 | #define DPRINTF_ERR(x)
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| 36 | #endif
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| 37 |
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| 38 | /* Use this for initialization etc. messages -- nothing repetitive: */
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| 39 | #if DEBUG_INFO
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| 40 | #define DPRINTF_INFO(x) dprintf x
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| 41 | #else
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| 42 | #define DPRINTF_INFO(x)
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| 43 | #endif
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| 44 |
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| 45 | /* Enable this to record detailed stuff: */
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| 46 | #if DEBUG
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| 47 | #define DPRINTF_DEBUG(x) dprintf x
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| 48 | #else
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| 49 | #define DPRINTF_DEBUG(x)
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| 50 | #endif
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| 51 |
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| 52 |
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| 53 | /* driver specific definitions */
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| 54 |
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| 55 | #define DRIVER_NAME "usb_midi"
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| 56 |
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| 57 | #define MY_ID "\033[34m" DRIVER_NAME ":\033[m "
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| 58 | #define MY_ERR "\033[31merror:\033[m "
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| 59 | #define MY_WARN "\033[31mwarning:\033[m "
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| 60 | #define assert(x) \
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| 61 | ((x) ? 0 : dprintf(MY_ID "assertion failed at " \
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| 62 | __FILE__ ", line %d\n", __LINE__))
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| 63 |
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| 64 | #define DEFAULT_CONFIGURATION 0
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| 65 |
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| 66 | struct driver_cookie;
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| 67 |
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| 68 |
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| 69 | typedef struct usbmidi_device_info
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| 70 | {
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| 71 | /* list structure */ /* should not be needed eventually */
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| 72 | struct usbmidi_device_info* next;
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| 73 |
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| 74 | /* Set of actual ports ("cables" -- one or more) */
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| 75 | struct usbmidi_port_info* ports[16];
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| 76 |
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| 77 | /* maintain device (common for all ports) */
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| 78 | sem_id sem_lock;
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| 79 | sem_id sem_send;
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| 80 | area_id buffer_area;
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| 81 | usb_midi_event_packet* buffer; /* input buffer & base of area */
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| 82 | usb_midi_event_packet* out_buffer; /* above input buffer */
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| 83 | size_t buffer_size; /* for each of in and out buffers */
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| 84 |
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| 85 | const usb_device* dev;
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| 86 | uint16 ifno;
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| 87 | int devnum; /* unique device number */
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| 88 | char name[20];
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| 89 | /* = "/dev/midi/usb/n" --port number will be appended to this */
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| 90 |
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| 91 | bool active;
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| 92 |
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| 93 | /* work area for transfer */
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| 94 | int bus_status;
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| 95 | int actual_length;
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| 96 | const usb_endpoint_info* ept_in;
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| 97 | const usb_endpoint_info* ept_out;
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| 98 |
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| 99 | bigtime_t timestamp; /* Is this needed? Currently set but never read */
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| 100 | uint flags; /* set to 0 but never used */
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| 101 | } usbmidi_device_info;
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| 102 |
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| 103 |
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| 104 | typedef struct usbmidi_port_info
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| 105 | {
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| 106 | /* list structure for manager */
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| 107 | struct usbmidi_port_info* next;
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| 108 |
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| 109 | /* Common device that does the work */
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| 110 | usbmidi_device_info* device;
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| 111 |
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| 112 | /* Port-specific variables */
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| 113 | char name[40]; /* complete pathname of this port */
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| 114 | struct ring_buffer* rbuf;
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| 115 |
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| 116 | int cable; /* index of this port */
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| 117 | bool has_in, has_out;
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| 118 |
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| 119 | int open;
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| 120 | struct driver_cookie* open_fd;
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| 121 |
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| 122 | } usbmidi_port_info;
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| 123 |
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| 124 |
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| 125 | /*
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| 126 | usb_midi.c
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| 127 | */
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| 128 |
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| 129 | extern usb_module_info* usb;
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| 130 | extern const char* usb_midi_base_name;
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| 131 |
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| 132 | usbmidi_port_info*
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| 133 | create_usbmidi_port(usbmidi_device_info* devinfo,
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| 134 | int cable, bool has_in, bool has_out);
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| 135 |
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| 136 | void
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| 137 | remove_port(usbmidi_port_info* port);
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| 138 |
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| 139 | usbmidi_device_info*
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| 140 | create_device(const usb_device* dev, uint16 ifno);
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| 141 | /* ifno not actually used -- left in for now */
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| 142 |
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| 143 | void
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| 144 | remove_device(usbmidi_device_info* my_dev);
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| 145 |
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| 146 |
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| 147 | /*
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| 148 | devlist.c
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| 149 | */
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| 150 |
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| 151 | extern sem_id usbmidi_port_list_lock;
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| 152 | extern bool usbmidi_port_list_changed;
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| 153 |
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| 154 | void
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| 155 | add_port_info(usbmidi_port_info* port);
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| 156 |
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| 157 | void
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| 158 | remove_port_info(usbmidi_port_info* port);
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| 159 |
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| 160 | usbmidi_port_info*
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| 161 | search_port_info(const char* name);
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| 162 |
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| 163 | int
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| 164 | find_free_device_number(void);
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| 165 |
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| 166 | extern char** usbmidi_port_names;
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| 167 |
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| 168 | void
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| 169 | alloc_port_names(void);
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| 170 |
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| 171 | void
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| 172 | free_port_names(void);
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| 173 |
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| 174 | void
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| 175 | rebuild_port_names(void);
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